CIRFU and IRFU adopted a four-yard Interference rule while the CRU opted for three yards of Interference.
Western Canada Rugby Football Union joined the CRU and challenged for the Grey Cup. Edmonton Eskimos, first Western team to play in a Grey Cup game, lost to Toronto Argonauts 23-0. Rule changes included reducing players from 14 to 12 per side; putting ball into play by snapping it back; limit of 18 players with substitutes permitted freely.
Calgary Tigers renamed the 50th Battalion. Queen's defeats Regina 54-0 as Queen's scored a record nine touchdowns on December 1. Edmonton withdrew from competition.
Coach Bill Hughes of Queen's introduced the use of films as a coaching technique. Numbering of players, although used for years was made compulsory. The Regina Rugby Club became the Regina Roughriders.
McGill coach Frank Shaughnessy introduced the huddle system to Canadian football. It was at first called the Conference System. Calgary 50th Battalion became the Tigers. Ottawa changed its name to the Senators.
British Columbia Rugby Football Union was formed on September 1.
Western Canada Intercollegiate Union was formed. Ottawa reverted to the name Rough Riders
Tri-City Rugby Football Union was formed on August 25 and consisted of Moose Jaw, Regina and Winnipeg. The Union disbanded the following year because of travel expenses. Saskatchewan and Winnipeg re-formed their unions. First radio play-by-play broadcast of a Grey Cup Game was on December 1. Hamilton Tigers shutout Regina Roughriders 30-0 before a crowd of 4,767 at the Hamilton Amateur Athletic Association Grounds.
CRU adopted use of the forward pass on a limited basis in Junior, Interscholastic, Western Canada Rugby Union, Western Intercollegiate Union and the Grey Cup final. First legal pass in Canada was thrown by Gerry Seiberling and the first reception was by Ralph Losie of Calgary Altomah-Tigers against Edmonton on September 21. Jersey Jack Campbell of Regina threw the first forward pass in a Grey Cup game and Jerry Erskine made the first reception. First touchdown pass was by Edmonton's Joe Cook to Pal Power in the second quarter of a game against the University of Alberta on September 28. The first interception return for a touchdown was by Joe Hess of the University of Alberta in the same game when he caught a pass by Cook.